HighFix available
tftp-hpa — security advisory
A flaw was found in tftp-hpa. When the `in.tftpd` remap engine processes an inverse remap rule that also aborts with a non-empty custom error message, it can pass invalid match offsets to the `genmatchstring()` function. This leads to out-of-bounds read/write operations. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted request, causing the daemon to crash and resulting in a denial of service.
- Products
- tftp-hpa
- Affected versions
- 5.2+20150808-1.4, 5.2+20150808-2, 5.2+20240610-1, 5.2+20240610-2, 5.2+20240610-3, 5.3+20251110-1, 5.3+20251116-1, 5.3+20251209-1, 5.3+20251209-2, 5.4-1, 5.4-2, 7.1-1, 7.2+20261013-1, 7.2+20261013-2, 7.2-1, 7.2-2, 7.2-3
- Fixed versions
- 5.3+20251116-1
- CVEs
- CVE-2026-85234
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 11:48 UTC · Revision 1
Source evidence
A flaw was found in tftp-hpa. When the `in.tftpd` remap engine processes an inverse remap rule that also aborts with a non-empty custom error message, it can pass invalid match offsets to the `genmatchstring()` function. This leads to out-of-bounds read/write operations. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted request, causing the daemon to crash and resulting in a denial of service.
osv:DEBIAN-CVE-2026-85234
tftp-hpa
Fixed versions: Not specified
tftp-hpa
Fixed versions: Not specified
tftp-hpa
Fixed versions: 5.3+20251116-1
Complete source record
{
"id": "6f640e2252b1dc666b6dd430e4451bfe4fced0d0c9c3b725cb181fe74c38386c",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-85234",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-85234",
"summary": "A flaw was found in tftp-hpa. When the `in.tftpd` remap engine processes an inverse remap rule that also aborts with a non-empty custom error message, it can pass invalid match offsets to the `genmatchstring()` function. This leads to out-of-bounds read/write operations. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted request, causing the daemon to crash and resulting in a denial of service.",
"evidence": "osv:DEBIAN-CVE-2026-85234",
"products": [
{
"name": {
"value": "tftp-hpa",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.2+20150808-1.4",
"evidence": "/affected/0/versions"
},
{
"value": "5.2+20150808-2",
"evidence": "/affected/0/versions"
},
{
"value": "5.2+20240610-1",
"evidence": "/affected/0/versions"
},
{
"value": "5.2+20240610-2",
"evidence": "/affected/0/versions"
},
{
"value": "5.2+20240610-3",
"evidence": "/affected/0/versions"
},
{
"value": "5.3+20251110-1",
"evidence": "/affected/0/versions"
},
{
"value": "5.3+20251116-1",
"evidence": "/affected/0/versions"
},
{
"value": "5.3+20251209-1",
"evidence": "/affected/0/versions"
},
{
"value": "5.3+20251209-2",
"evidence": "/affected/0/versions"
},
{
"value": "5.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "5.4-2",
"evidence": "/affected/0/versions"
},
{
"value": "7.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2+20261013-1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2+20261013-2",
"evidence": "/affected/0/versions"
},
{
"value": "7.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2-2",
"evidence": "/affected/0/versions"
},
{
"value": "7.2-3",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "5.2+20240610-3",
"evidence": "/affected/1/versions"
},
{
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"evidence": "/affected/1/versions"
},
{
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"evidence": "/affected/1/versions"
},
{
"value": "5.3+20251209-1",
"evidence": "/affected/1/versions"
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{
"value": "5.3+20251209-2",
"evidence": "/affected/1/versions"
},
{
"value": "5.4-1",
"evidence": "/affected/1/versions"
},
{
"value": "5.4-2",
"evidence": "/affected/1/versions"
},
{
"value": "7.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "7.2+20261013-1",
"evidence": "/affected/1/versions"
},
{
"value": "7.2+20261013-2",
"evidence": "/affected/1/versions"
},
{
"value": "7.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "7.2-2",
"evidence": "/affected/1/versions"
},
{
"value": "7.2-3",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "tftp-hpa",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.3+20251116-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "5.2+20240610-3",
"evidence": "/affected/2/versions"
},
{
"value": "5.3+20251110-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-85234",
"aliases": [
"DEBIAN-CVE-2026-85234"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
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}
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}
],
"package": {
"name": "tftp-hpa",
"purl": "pkg:deb/debian/tftp-hpa?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"5.2+20150808-1.4",
"5.2+20150808-2",
"5.2+20240610-1",
"5.2+20240610-2",
"5.2+20240610-3",
"5.3+20251110-1",
"5.3+20251116-1",
"5.3+20251209-1",
"5.3+20251209-2",
"5.4-1",
"5.4-2",
"7.1-1",
"7.2+20261013-1",
"7.2+20261013-2",
"7.2-1",
"7.2-2",
"7.2-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-85234.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tftp-hpa",
"purl": "pkg:deb/debian/tftp-hpa?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"5.2+20240610-3",
"5.3+20251110-1",
"5.3+20251116-1",
"5.3+20251209-1",
"5.3+20251209-2",
"5.4-1",
"5.4-2",
"7.1-1",
"7.2+20261013-1",
"7.2+20261013-2",
"7.2-1",
"7.2-2",
"7.2-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-85234.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.3+20251116-1"
}
]
}
],
"package": {
"name": "tftp-hpa",
"purl": "pkg:deb/debian/tftp-hpa?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"5.2+20240610-3",
"5.3+20251110-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-85234.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-14T10:00:12.520299821Z",
"provider": "osv",
"upstream": [
"CVE-2026-85234"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-85234"
]
},
"related_cves": [
{
"value": "CVE-2026-85234",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 315371,
"published_at": "2026-09-15T18:19:34.927+00:00"
}